[Elecraft] K3: my audio information

[Joe Subich, W4TV]

On 2018-06-05 5:21 AM, Bill wrote:

 >      RX EQ         1        -2
 >                    2         0
 >                    3        +9
 >                    4        +12
 >                    5        +11
 >                    6        +14
 >                    7        +7
 >                    8        -16

Elecraft *strongly discourage* significant boost (+) settings in
RX EQ as doing so can cause overdrive and distortion in the audio
amplifier.

One would be better served to reduce each band by 10 to 13 dB.
The results would be very similar without the audio distortion
issues.

 >      Shift -        1.25
 >      Width -        2.7

This combination actually results in a passband of 0 Hz (-100Hz)
to to 2600 Hz (Shift + Width/2).  Better results would be obtained
with FL=100, FH=2700 (or FC=1.40, BW=2600).

73,

    ... Joe, W4TV


On 2018-06-05 5:21 AM, Bill wrote:
> I received several email requests for my audio settings and speakers. 
> This is what I am using:
> 
> The following are the settings I am using on 40, 75, 160 for armchair 
> copy (meaning very reduced hiss and no ANF warbling). My RX audio goes 
> through amplified Behringer MS-40 amplified studio speakers with 
> bass/treble adjustments.
> 
> The speaker adjustments:  bass at 3 o'clock and the treble at 11 o'clock
> 
> K3 settings (Config Menu):
>      AGC DLY - NORM
>      AGC HLD - 0
>      AGC PLS - NORM
>      AGC SLP - 4 to 6 (low setting reduces artifacts from the Automatic 
> Notch Filter)
>      AGC THR - 12
>      AGC F -       120
>      AGC S -       20
>      Shift -          1.25
>      Width -        2.7
>      RF Gain -    90 (sometimes less)
>      ATT -           ON
>      RX EQ         1        -2
>                           2        0
>                           3        +9
>                           4        +12
>                           5        +11
>                           6        +14
>                           7        +7
>                           8        -16
> 
> Be sure to read the "Noisy K3" section on http://www.w3fpr.com/- 
> excellent information!
> 
> The disclaimer:  Your mileage for the above settings may vary - 
> depending upon speaker selection, personal preferences, and your hearing 
> acuity.
> 
> Note:  I made all of my settings by hand, using the K3 menus. I did NOT 
> use K3 EZ as that program will sometimes upset the AGC settings.
> 
> Bill W2BLC
> 
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